As the carrier of bulk materials transportation, belt conveyors are widely used in the field of bulk material transport because of continuous and stable material transport, large transport volume, long distance, safe and reliable logistics, strong environmental adaptability, low manufacturing, installation and transportation costs. For a long time, people have fully studied the transmission mechanism, operating characteristics and manufacturing technology of the belt conveyor, but seldom discuss the design and manufacturing costs and operating costs of the conveyor. With the rapid development of enterprise production in the direction of modernization, the adoption of powerful belt conveyors with large transport capacity and long distances, the cost of conveyor manufacturing and operation has received increasing attention. How to reduce the cost of conveyor manufacturing and operation is the key to the promotion of large belt conveyors. This article starts with analysing various factors affecting the technical and economic performance of the belt conveyor, discusses the principle of reasonably determining the belt speed, and proposes an effective way to reduce the cost of manufacturing and operating the conveyor.
In the case of a certain amount of traffic and manufacturing technology, the main factors affecting the manufacturing and operating costs of conveyors are the bandwidth, belt strength, drive equipment configuration, idlers, rollers, and various brackets. The difference in these factors produces a difference in drive power. , and all factors have a close relationship with the speed. In the belt conveyor design, the only parameter that can be subjectively determined is the belt speed. The determination of the belt speed is reasonable, which directly affects the technical and economic performance of the conveyor.
Of course, the factors influencing the selection of the belt speed are not only the transport capacity and distance. For example, the material size, conveyor inclination angle, ambient wind speed, soft start, and soft stop device performance all have a direct impact on the belt speed selection because the materials follow the conveyor belt. In the course of running between the two idlers, the material changes periodically with the sag, resulting in an acceleration in the direction of the vertical conveyor belt. The higher the running speed of the conveyor belt, the greater the acceleration of the material. When the acceleration direction of the conveyor belt and the material are opposite, the material will have a throwing tendency. When the inertia force of the material is greater than the sum of its own weight and adhesion force, the material will break away from the conveyor belt, and the material rolling phenomenon will become even more as the material particle size and the conveyor inclination angle increase. serious. When the friction between the materials is less than the wind resistance, the materials will float and cause environmental pollution. Therefore, when the ambient wind speed and the conveyor are reversed, the higher the wind speed, the lower the belt speed.
This paper discusses the important position and role of belt speed in the design of belt conveyors, and qualitatively analyzes the relationship between belt speed and the technical and economical performance of conveyors from the perspective of theoretical calculations. The trend of changes in technical and economic performance with belt speed is obtained. In the specific design, we must reasonably determine the belt speed, and proceed from the comprehensive technical and economic performance of the conveyor, compare and select multiple belt speeds, and select the optimal economic belt speed.
In the case of a certain amount of traffic and manufacturing technology, the main factors affecting the manufacturing and operating costs of conveyors are the bandwidth, belt strength, drive equipment configuration, idlers, rollers, and various brackets. The difference in these factors produces a difference in drive power. , and all factors have a close relationship with the speed. In the belt conveyor design, the only parameter that can be subjectively determined is the belt speed. The determination of the belt speed is reasonable, which directly affects the technical and economic performance of the conveyor.
Of course, the factors influencing the selection of the belt speed are not only the transport capacity and distance. For example, the material size, conveyor inclination angle, ambient wind speed, soft start, and soft stop device performance all have a direct impact on the belt speed selection because the materials follow the conveyor belt. In the course of running between the two idlers, the material changes periodically with the sag, resulting in an acceleration in the direction of the vertical conveyor belt. The higher the running speed of the conveyor belt, the greater the acceleration of the material. When the acceleration direction of the conveyor belt and the material are opposite, the material will have a throwing tendency. When the inertia force of the material is greater than the sum of its own weight and adhesion force, the material will break away from the conveyor belt, and the material rolling phenomenon will become even more as the material particle size and the conveyor inclination angle increase. serious. When the friction between the materials is less than the wind resistance, the materials will float and cause environmental pollution. Therefore, when the ambient wind speed and the conveyor are reversed, the higher the wind speed, the lower the belt speed.
This paper discusses the important position and role of belt speed in the design of belt conveyors, and qualitatively analyzes the relationship between belt speed and the technical and economical performance of conveyors from the perspective of theoretical calculations. The trend of changes in technical and economic performance with belt speed is obtained. In the specific design, we must reasonably determine the belt speed, and proceed from the comprehensive technical and economic performance of the conveyor, compare and select multiple belt speeds, and select the optimal economic belt speed.
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